Why are we wanting to make craftables reversible? Huge -1 from me, there is literally a workbench use for almost everything that is on here..

 

So this is a -1 for everything based off the /crush suggestion, but I see some potential:

I wouldn't be against a new command that expands only the mutually reversible crafting recipes from vanilla (like diamond blocks to diamonds, bone block to bonemeal, etc.). Don't add it to crush as /crush only exists so you don't need to place a block down and mine it to get a variant (like stone to cobble). Basically, anything that can be made with just /cnd (not /cnd allnorev) can have something like /epd or /expand.

But the stuff that is reverse crafting out of the vanilla spectrum (like sandstone to sand), that's a huge no from me since that isn't simplifying a vanilla aspect.

So in short:

Spoiler: =I can get behind these IF THERE IS A NEW COMMAND

Bone Block // 9x Bone Meal
Coal Block // 9x Coal
Copper Block // 9x Copper
Diamond Block // 9x Diamond
Emerald Block // 9x Emerald
Gold Block // 9x Gold Ingot
Gold Ingot // 9x Gold Nugget
Hay Block // 9x Wheat
Iron Block // 9x Iron Ingot
Iron Ingot // 9x Iron Nugget
Lapis Lazuli Block // 9x Lapis Lazuli
Netherite Block // 9x Netherite Ingot
Raw Copper Block // 9x Raw Copper
Raw Gold Block // 9x Raw Gold
Raw Iron Block // 9x Raw Iron
Redstone Block // 9x Redstone

Spoiler: =Do not agree they need a command like /crush since it isn't a vanilla thingy

Blaze Rod // 2x Blaze Powder
Clay Block // 4x Clay Ball
Glowstone Block // 4x Glowstone Dust
Red Sandstone // 4x Red Sand
Quartz Block // 4x Quartz
Melon Block // 9x Melon Slice
Sandstone // 4x Sand

Edit: this is off your revised list, not the original one

Edit2: only one that I can see being added to /crush is clay to clayballs since you always get 4 balls from one clay block when you mine it, and that would be a good addition.

 

Spoiler: But why?

Coal Block // 9x Coal
Copper Block // 9x Copper
Diamond Block // 9x Diamond
Emerald Block // 9x Emerald
Gold Block // 9x Gold Ingot
Gold Ingot // 9x Gold Nugget
Iron Block // 9x Iron Ingot
Iron Ingot // 9x Iron Nugget
Lapis Lazuli Block // 9x Lapis Lazuli
Netherite Block // 9x Netherite Ingot
Raw Copper Block // 9x Raw Copper
Raw Gold Block // 9x Raw Gold
Raw Iron Block // 9x Raw Iron
Redstone Block // 9x Redstone

These blocks you can easily press 'E' and open up your inventory to convert.. no need to be included in /crush

 

by that logic /condense shouldn't exist it all, but it does

 

Fair.

 

This doesn't seem like it would fit the /crush command.
I really don't believe we need more commands for things that can be done with a few clicks.